Q:

# What is the formula for the surface area of a triangular prism?

A:

The formula for the surface area of a triangular prism is SA = bh + (s1 + s2 + s3)H. In this formula, "b" is the triangle base, "h" is the triangle height, "s1," "s2" and "s3" are the three triangle sides, and "H" is the length of the prism.

## Keep Learning

A triangular prism can be thought of as two triangles and three quadrilaterals, so finding the total surface area involves finding the area of each of the five shapes and adding them together.

The area of a triangle is one half of the base multiplied by the height. The area of a quadrilateral is the base multiplied by the height.

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The surface area of a rectangular prism is the combined surface areas of all six of its sides. Because opposing sides are always the same size, the total surface can be determined by using the length, width and height of the front, top and side of the prism.

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The volume of a prism is worked out by first calculating the area of the surface and then multiplying that figure by the length of the prism. This applies whatever the shape a prism takes.

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The surface area of a cylinder is equal to the sum of the surface area of the circles on either end and the surface area of the side. The surface area of the side is equal to the product of the circumference of the circles at either end and the height of the cylinder.